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feat(glcdc): screen rotation support

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This commit is contained in:
Akos Becsey
2024-06-19 15:34:31 +02:00
committed by Gabor Kiss-Vamosi
parent df73e12464
commit fd79a4f427
2 changed files with 50 additions and 2 deletions
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20
docs/integration/driver/display/renesas_glcdc.rst
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@@ -59,3 +59,23 @@ Buffer swapping can be activated by passing a second buffer of same size instead
lv_display_t * disp = lv_renesas_glcdc_partial_create(partial_draw_buf, NULL, sizeof(partial_draw_buf));
lv_display_set_default(disp);
.. note::
Partial mode can be activated via the macro in ``src/board_init.c`` file of the demo projects.
Screen rotation
"""""""""""""""
Software based screen rotation is supported in partial mode. It uses the common API, no extra configuration is required:
.. code:: c
lv_display_set_rotation(lv_display_get_default(), LV_DISP_ROTATION_90);
/* OR */
lv_display_set_rotation(lv_display_get_default(), LV_DISP_ROTATION_180);
/* OR */
lv_display_set_rotation(lv_display_get_default(), LV_DISP_ROTATION_270);
Make sure the heap is large enough, as a buffer with the same size as the partial buffer will be allocated.

32
src/drivers/display/renesas_glcdc/lv_renesas_glcdc.c
View File

@@ -36,6 +36,7 @@
#include <stdbool.h>
#include "../../../display/lv_display_private.h"
#include "../../../draw/sw/lv_draw_sw.h"
/*********************
* DEFINES
@@ -76,6 +77,9 @@ static glcdc_runtime_cfg_t g_layer_change;
display_t g_display0_cfg;
#endif /*_RENESAS_RX_*/
static void * rotation_buffer = NULL;
static uint32_t partial_buffer_size = 0;
/**********************
* MACROS
**********************/
@@ -92,6 +96,7 @@ lv_display_t * lv_renesas_glcdc_direct_create(void)
lv_display_t * lv_renesas_glcdc_partial_create(void * buf1, void * buf2, size_t buf_size)
{
partial_buffer_size = buf_size;
return glcdc_create(buf1, buf2, buf_size, LV_DISPLAY_RENDER_MODE_PARTIAL);
}
@@ -277,13 +282,36 @@ static void flush_wait_direct(lv_display_t * display)
static void flush_partial(lv_display_t * display, const lv_area_t * area, uint8_t * px_map)
{
LV_UNUSED(display);
uint16_t * img = (uint16_t *)px_map;
lv_color_format_t cf = lv_display_get_color_format(display);
lv_display_rotation_t rotation = lv_display_get_rotation(display);
if(rotation != LV_DISPLAY_ROTATION_0) {
int32_t w = lv_area_get_width(area);
int32_t h = lv_area_get_height(area);
uint32_t w_stride = lv_draw_buf_width_to_stride(w, cf);
uint32_t h_stride = lv_draw_buf_width_to_stride(h, cf);
// only allocate if rotation is actually being used
if(!rotation_buffer) {
rotation_buffer = lv_malloc(partial_buffer_size);
LV_ASSERT_MALLOC(rotation_buffer);
}
if(rotation == LV_DISPLAY_ROTATION_180)
lv_draw_sw_rotate(img, rotation_buffer, w, h, w_stride, w_stride, rotation, cf);
else /* 90 or 270 */
lv_draw_sw_rotate(img, rotation_buffer, w, h, w_stride, h_stride, rotation, cf);
img = rotation_buffer;
lv_display_rotate_area(display, (lv_area_t *)area);
}
int32_t w = lv_area_get_width(area);
int32_t h = lv_area_get_height(area);
uint16_t * fb = (uint16_t *)fb_background[1];
uint16_t * img = (uint16_t *)px_map;
fb = fb + area->y1 * DISPLAY_HSIZE_INPUT0;
fb = fb + area->x1;